Faraday's Left Hand Rule

[Kracatoan]

Just wondering, is there an equation for the force exerted on a charged particle moving perpendicularly through a magnetic field?

[n.karthick]

Yes there it is. You might have heard of Lorentz force equation.
Please check Wikipedia's page on it and refer any standard text book for detailed explanation.

http://en.wikipedia.org/wiki/Lorentz_force

[Kracatoan]

Ah I see, but how do I get the vector cross product for something like a beta particle passing though a magnetic field which is perpendicular to it?

[McLaren Rulez]

Ah I see, but how do I get the vector cross product for something like a beta particle passing though a magnetic field which is perpendicular to it?

The direction is found using (qv)x(B). So depending on the sign of q, your vector will point in one of two possible directions.

[Kracatoan]

Ah Excellent. Thanks you two.